Krauskopf Memorial Library is switching from Refworks to Mendeley Reference Manager on June 1, 2026.

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If a book or article you want is not available, use Interlibrary Loan (ILL). The Library can order books and articles from other libraries. This process takes few days but is completely free for DelVal students, faculty, and staff.
Before you submit an ILL, check Google Scholar or Summon to see if we have immediate access or if it is freely available online.
A literature review summarizes existing research on a particular topic. Various types of literature reviews exist, differing in their scope, level of detail, time frame, and the kinds of studies they include.

Image and citations from MUSC Libraries.
Please navigate to MUSC Libraries' research guide on types of reviews to further read about each type, and to see examples.
When selecting articles for a literature review, establish clear criteria based on your research question. These are referred to as inclusion and exclusion criteria. Applying them carefully is essential, as inconsistent or unclear criteria can introduce bias into your review.
Inclusion criteria specify the characteristics that a study must possess to be considered eligible for a literature review.
For example, included studies might be required to:
Compare specific treatments
Employ experimental, observational, or both types of research designs
Have been published within a defined timeframe (with a clear justification)
Be of certain publication types
Involve a particular population
Exclusion criteria specify the characteristics that disqualify a study from being included in a literature review.
For example, studies may be excluded if they:
Use qualitative methods
Employ certain study designs (e.g., observational)
Belong to specific publication types (e.g., systematic reviews)
Were published before a defined year (with a justified rationale)
Involve animal models
Are published in a language other than English

Formulating your research question is one of the most critical steps in conducting a literature review. At this stage, you and your team have identified a gap in existing knowledge and seek to address a focused question, such as:
If X is prescribed, what effect will it have on patients? (Assessing an intervention)
How does X influence Y? (Synthesizing existing evidence)
What is the nature of X? (Exploring a concept or phenomenon)
Regardless of your specific aim, developing a clear, well-defined, and appropriately scoped research question is essential to the success of your review. This question will serve as the foundation for your work and guide your team in identifying two to five key search concepts, which will later form the basis of your search strategy.
Developing a research question is a gradual process, and your team may refine it through several iterations before arriving at the final version. Using a research question framework can help provide structure and focus to your systematic review.
One commonly used framework is PICO/T, which stands for:
P – Population or Problem
I – Intervention or Exposure
C – Comparison
O – Outcome
T – Time
Each PICO/T question includes at least the P, I, and O components, with some also incorporating C or T. Below are sample PICO/T questions to illustrate how this framework can guide your research design.

Image from: https://nursingessaywriting.com/blog/what-is-picot
This style guide is borrowed from the James Cook University Library. They have made it publicly available through Creative Commons license.
AMA Style is a variation of the Vancouver system that is used by the Journal of the American Medical Association (JAMA) and other publications by the AMA. We are currently following the 11th edition of the AMA style guide.
AMA is a documentary-note style, which means you put a number in your text to cite sources of information and the reference list is in numerical order.
In text citations are in superscript1 and in order of citation (the first citation is 1 the next is 2). If you use the same source again, you keep the same number (the source you used for the first citation is always 1, even if you use it again after 6).
General Notes:
Find many more AMA examples and more on the AMA Research Guide.